SOLUTION: How many gallons of a 50% salt solution must be mixed with 30 gallons of a 17% solution to obtain a solution that is 40% salt?

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Question 409482: How many gallons of a 50% salt solution must be mixed with 30 gallons of a 17% solution to obtain a solution that is 40% salt?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Let x represent the gallons of the 50% solution

Question states***

 .50x + .17*30gal = .40(30gal + x)

Solving for x

      .10x = .23*30gal

         x = 69gal

CHECKING our Answer***

  34.5gal + 5.1gal = 39.6gal